Samuel coombs



(No Model.)

S. GOOMBS.

DOOR CHECK.

Patented S'ept. 2l, 1886.

'A UNITED STATES PATENT OEEicE.

SAMUEL OOOMBS, OF KENNING'ION ROAD, COUNTY OF SURREY, ENGLAND.

DOOR-CHECK.

J'PECIFICATION forming part of Letters Patent NO. 349,384, dated September 2l, 1886.

Application tiled March 4, 18H6. Serial No. 193,922. (No model.)

To @ZZ whom it may concern:

Be it known that I, SAMUEL CooMns, a subject of the Queen of Great Britain, and resid# ing at 1l Vincott Street, Kennington Road, in the county of Surrey, and Kingdom of Great Britain, Joiner, have invented a certain new and useful Mechanical Door-Check; and I do hereby declare that the following is a full, clear, and exact description ro1" the invention, which will enable others skilled in the art to which it appertains to inake and use the saine.

The mechanical door check forming the subject of this invention is intended to prevent doors from slamming when they are closing. It may be used with any door-closing spring, or with spring-hinges, and it may be fixed either in tl1el1angingstile of the door orin the corresponding post of the door-frame. The construction of the check is illustrated in the drawings hereto annexed, inv whichv Figure 1 is a sectional elevation, and Fig. 2 a sectional plan, showing the check-as applied to the hanging-post of a door.

A and B are two strong metal levers or arins, fitted inside a strong metal case, D, in serted and secured in a niortise in the hang :ing-post .I of the door-frame. The fulcra of these levers are at I and H, respectively. A knob or projection, F, is xed to or formed with the lever A, and passes through a hole in the face-plate E of the case D. The lever B is acted on by a spring, G, which tends constantly to force the free end of the lever B in the direction of the arrow against the stop K.

The levers A and B are placed so as to form an angle with each other, the inner edges forming two inclined planes, between which is placed a sliding piece, C, preferably of hard wood, or of metal or other suitable inaterial.

When the door L closes, the edge of the hanging-stile, or, preferably, a metal plate, M, secured therein, cornes against the knob or projection F, as shown in Fig. 2. The upper end of the lever A is thereby pushed inward, pressing against the sliding piece C, which reacts upon the lever B, the immediate effect being to turn the said lever B slightly on its center H against the action of the spring G, so as to avoid any sudden rebound of the door; but when the sudden closing force of the door is expended the spring G restores the lever B to its normal position against the stop K. In 'consequence of the angular position of the levers A and B with regard to each other, and the correspondingly-tapered or wedge forni of the piece C, the movement of the lever A on its fulcrurn I causes the piece C to slide upward between the two levers, but with a certain amount of friction, which acts as a brake or resistance that retards the closing of the door. The piece C continues to slide upward until the door is completely closed by the action of its closingspring or spring-hinges. When the door is opened again, the lever A and the piece C return by their own weight into the positions shown inv Figal, ready to act again in the same way.

Figs. 3 and 4 show a modification of the above-described arrangement, in which the piece B is fixed in the case D, and does not turn on a fulcrurn like the piece B in Figs. 1 and 2, the shock of closing being in this case wholly absorbed by the friction of the sliding piece C in sliding up between thelever A on the one hand and the fixed piece or abutment B on the other. The spring G of Fig. l is of course not required in this case.

N is a piece of leather or other soft material Xed to the piece C, and bearing lightly against the edges of the pieces A and B, for

Athe purpose of keeping the said edges free from dirt as the said sliding piece moves up and down between them.

Similar letters of reference relate to like parts in all the iigures of the drawings.

If preferred, the case D with its contents may be secured in the hanging-stile of the door, instead of inthe door-post, as shown in the drawings, and in that case the knob or projection F will corne in contact with the door-postv as the door closes, and the action and effect ofthe parts will be the saine as above described.

In some cases I combine iny door-check with a hinge (either a spring-hinge or otherwise) in suoli manner that the {nee-plete E forms one on by the edge of the dem` er dooni'rmne, subof the leaves of such hinge. stantially as described and illustrated.

I claim- SAMUEL CUOMBS. A mechanical door-cheek construeted with Vitxlesses: 5 the parts A and B placed at an angle with STEPHEN EDWARD GUNYON,

each other, in combination with the f fictional taper or Wedge-shaped sliding piece C, :1rrauged between them, the pmt A being aeted 1'15 Cannon Straal, London. XVILLIAM ANDERSON SMITH,

23 FeLrZef/h Rond, Lon/low. 

